A futuristic underwater sea-lab is having problems with a UFO that's parked between them and a nearby deep ocean trench. As they investigate, they attract the unwanted attention of a dangerous creature who puts the scientists and crew in danger.

Scott Brady
Commander Wayne

Sheree North
Dr. Rene Peron

Gary Merrill
Dr. LaSatier

John Howard
Dr. James

Wende Wagner
Sandra Welles

Mike Road
Hugh Maddox

William Thourlby
Tex

Biff Elliot
Dr. Wilson
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Release Date
May 1, 1966
Runtime
1h 23m
Genres
Science Fiction, Thriller
Director
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